Galvanized steel tau ntev yog lub pob zeb ua haujlwm hauv kev tsim kho, kev tsim khoom, thiab ntau yam kev lag luam thov kom xeb. Cov txheej txheem ntawm Galvanization cuam tshuam nrog txheej txheej hlau nrog ib txheej tiv thaiv ntawm zinc kom tsis txhob muaj xeb. Txawm li cas los xij, ib qho lus nug tshwm sim: yog galvanized steel xeb? Nkag siab txog cov khoom ntawm Galvanized yog qhov tseem ceeb rau cov engineers, kws tsim khoom, thiab cov kws tshaj lij, thiab cov kws tshaj lij kev lag luam uas cia siab rau nws txoj kev ua kom ntev. Cov lus sau no rho tawm hauv cov tawv tawv ntawm cov hlau galvanized, cov xwm txheej uas nws yuav xeb, thiab kev coj ua zoo tshaj plaws rau nws cov kev siv hauv ntau qhov chaw. Los ntawm kev tshuaj xyuas cov ntsiab cai ntawm cov hauv paus ntsiab cai ntawm galvanization thiab nws cov hauj lwm zoo, peb tsom muab kev tsom xam cov khoom siv no.
Rau cov neeg xav nyob rau hauv cov ncauj lus kom ntxaws thiab kev siv ntawm Galvanized steel , nkag siab txog nws tus cwj pwm hauv cov xwm txheej sib txawv yog qhov tseem ceeb rau kev txiav txim siab txog kev txiav txim siab hauv cov khoom xaiv.
Tus txheej txheem galvanization thiab nws cov kev tiv thaiv kev tiv thaiv
Txhawm rau to taub cov hlau galvanized tuaj yeem xeb, nws yog qhov tseem ceeb tshaj plaws nkag siab txog cov txheej txheem galvanization nws tus kheej. Galvanization feem ntau cuam tshuam nrog cov hlau hauv da dej ntawm Molten Zinc ntawm ib ncig 450 ° F), ib txoj kev hu ua kub-dip galvanizing kub. Cov txheej zinc zinc ua lub cev lub cev, tiv thaiv ib puag ncig cov khoom ntawm ib puag ncig los ntawm kev tiv tauj cov hlau substrate. Ib qho ntxiv, Zinc muab kev tiv thaiv kab mob fij; Thaum lub txheej puas lawm, qhov zinc corrodes nyiam rau cov hlau vim nws cov kev cuam tshuam ntau dua, yog li tiv thaiv cov hlau los ntawm xeb.
Raws li American Galvanizizers Koom Tes, cov txheej zinc yuav txuas ntxiv lub neej ntawm cov txheej txheem steel thiab 20-25 xyoos nyob rau ib puag ncig uas muaj kev lag luam uas cov neeg hauv paus uas muaj siab dua. Qhov kev ua tau zoo ntawm kev tiv thaiv kev tiv thaiv yog nyob ntawm ntau yam, suav nrog cov tuab tuab ntawm zinc txheej, cov xwm txheej ib puag ncig, thiab muaj cov neeg sawv cev hauv cov neeg sawv cev.
Yam uas tuaj yeem ua rau xeb hauv galvanized steel
Ib puag ncig ib puag ncig
Thaum lub galvanized steel yog tsim los tiv thaiv corrosion, qee cov kev mob ib puag ncig tuaj yeem ua kom nrawm dua ntawm zinc txheej ntawm zinc txheej, thaum kawg ua rau xeb ntawm cov hlau hauv qab. Cov av noo, cov nag acidic, ntsev raug, thiab cov kuab paug; Nyob rau hauv ib puag ncig ib puag ncig, piv txwv li, muaj cov tshuaj chloride ions inst thiaj li nce tus nqi ntawm zinc corrosion. Ib qho kev kawm los ntawm Tsoom fwv Asmeskas Cov Txheej Txheem Kev Koom Tes Loj yog qhia tias Galvanized steel qauv hauv cov ntug dej hiav txwv yuav muaj qhov tshuaj xeb ntau dua vim yog ntsev tsuag thiab noo noo.
Kev puas tsuaj puas thiab hnav
Kev puas tsuaj ntawm lub cev mus rau zinc txheej, xws li khawb, muaj kev puas tsuaj, lossis cuam tshuam, tuaj yeem ua rau cov hlau hauv qab los txhawm rau txhawm rau txhawm rau. Thaum lub sij hawm cov kev txi uas muaj kev fij tau ntawm zinc tuaj yeem tiv thaiv cov chaw me me ntawm cov hlau uas raug puas tuaj yeem cuam tshuam ntau dhau ntawm cov nyhuv uas tiv thaiv no. Kev tshawb xyuas tsis tu ncua thiab kev txij nkawm yog qhov tseem ceeb, tshwj xeeb hauv cov ntawv thov uas cov hlau yuav raug rau kev ntxhov siab.
Kev Siv Tshuaj
Raug rau qee yam tshuaj lom neeg tuaj yeem ua kom nrawm rau cov txheej txheem xeb. Piv txwv li, acids, alkalis, oxidizing oxidizing cov neeg sawv cev tuaj yeem hnov cov zinc, yaig cov txheej tiv thaiv. Kev muaj chaw muaj tshuaj uas muaj kev sib cav xav tau kev tiv thaiv kev tiv thaiv ntxiv lossis lwm cov khoom siv kom paub meej tias muaj kev ntev.
Cov Ntaub Ntawv Kev Tshawb Nrhiav Ua Kom Haum Kom Corrosion hauv Galvanized Steel
Qhov tseeb-ntiaj teb cov piv txwv qhia txog cov hlau loj tuaj yeem xeb nyob rau hauv cov xwm txheej tshwj xeeb. Nyob rau hauv rooj plaub kev kawm uas muaj kev cuam tshuam nrog Galvanized steel pipelines nyob rau hauv pawg ntug hiav txwv, nrawm corrosion tau pom vim tias muaj huab cua tsis tu ncua thiab cov av noo. Txawm hais tias thawj zaug tiv thaiv txheej, ib puag ncig hnyav txo cov kav lub neej ntawm lub raj kav los ntawm 30%. Lwm qhov piv txwv yog galvanized steel qauv hauv cov chaw muaj kev muaj nrog cov sulphur dioxide. Cov tshuaj acidic coj mus rau qhov tsim ntawm zinc sulfate, ploj zuj zus kev tiv thaiv txheej thiab ua rau xeb tsim ntawm cov hlau hauv qab.
Kev txheeb cais cov nqi xeb hauv cov chaw sib txawv
Txhawm rau kom muaj nuj nqis ntawm cov hlau galvanized hauv ntau qhov chaw, corrosion kev tshawb fawb tau ua thoob ntiaj teb. Nyob rau hauv cov pa phem nyob deb nroog uas muaj kuab paug nyob tsis muaj kuab lom Nyob rau hauv kev sib piv, kev lag luam thiab cov tubrog chaw muaj peev xwm ua rau tus nqi corrosion ntau tshaj 4 μm toj ib xyoo. Cov ntaub ntawv sau los ntawm cov koom haum thoob ntiaj teb rau cov qauv txheej txheem (ISO) muab cov lus qhia txog kev twv txiaj ntawm galvanized steel raws li kev faib tawm ib puag ncig. Piv txwv li, hauv ib puag ncig cais raws li C3 (Urban thiab Industrial Sulpheres Ecerate Erving Dioxide ntawm 85 μm yog kwv yees li 20-40 xyoo.
Kev tiv thaiv kev ntsuas thiab kev coj ua zoo tshaj plaws
Tsim nyog xaiv
Xaiv txoj cai hom ntawm galvanized steel thiab cov txheej txheej txheej tsim tuab yog qhov tseem ceeb. Lub cev yuag, feem ntau qhia nyob rau hauv grams ib square Meter (G / M²), txiav txim siab txog qib kev tiv thaiv. Rau ib puag ncig nrog cov nqi siab xeb, ua kom pom qhov hnyav zinc txheej tuaj yeem txhim kho kom ruaj khov. Cov qauv xws li ASTM ATTM ASTM A123 muab cov lus qhia rau txheej tuab raws li daim ntawv thov thiab cia ib puag ncig ib puag ncig.
Cov Khaub Ncaws Tiv Thaiv thiab Xim
Ua ntawv thov cov tshuaj tiv thaiv ntxiv, xws li pleev xim lossis hmoov pleev xim, dhau ntawm galvanized txheej yuav tau txuas ntxiv lub neej ntawm cov hlau. Cov txheej txheem duplex no sib txuas ntawm kev tiv thaiv xeb ntawm zinc nrog txoj kev tiv thaiv thaiv ntawm cov txheej. Raws li kev tshawb fawb tau luam tawm hauv phau ntawv Joivative ntawm cov txheej txheem tiv thaiv thiab cov ntaub pua tsev muaj txiaj ntsig ntxiv rau cov hlau galvanized los ntawm 1.5 rau 2.5 lub sij hawm piv rau galvanized steel ib leeg.
Kev kuaj xyuas tsis tu ncua thiab txij nkawm
Kev kuaj xyuas ib ntus pab txheeb xyuas cov cim thaum ntxov ntawm cov txheej txheej degradation lossis kev puas tsuaj. Kev tswj cov kev coj ua xws li kev tu, kov cov duab, thiab kho cov thaj chaw puas tuaj yeem tiv thaiv kev nce qib ntawm kev corrosion. Kev siv lub sijhawm txij nkawm yog qhov tseem ceeb tshwj xeeb rau cov qauv tsim tawm ntawm cov teeb meem.
Economic cuam tshuam ntawm Galvanized Steel Corrosion
Corrosion ntawm cov qauv steel muaj cov nqi kev lag luam tseem ceeb, suav nrog cov nqi txij nkawm muaj kev sib raug zoo, thiab muaj peev xwm kev nyab xeeb kev nyab xeeb. Lub Koom Haum Hauv Tebchaws ntawm Corrosion engineers (nace) kwv yees tias corrosion tus nqi rau ntau tshaj 3% ntawm lub ntiaj teb GDP txhua xyoo. Siv cov hlau loj galvanized nrog kev tiv thaiv tsim nyog tuaj yeem txo cov nqi no los ntawm kev ua haujlwm ntawm lub neej thiab txo qis kev kho lossis hloov. Kev nqis peev hauv cov hlau siab dua galvanized steel thiab tiv thaiv txij nkawm muaj peev xwm zam cov sij hawm ntev txuag thiab txhim kho kev nyab xeeb.
Kev Ntsuas piv nrog lwm txoj kev tiv thaiv Corrosion
Lwm txoj kev tiv thaiv Corrosion suav nrog kev siv cov hlau stainless, corrosion-resistant alloys, pleev xim, thiab cathodic tiv thaiv. Txhua txoj kev muaj nws cov txiaj ntsig thiab cov kev txwv. Stainless hlau muaj cov corrosion zoo tshaj plaws tab sis ntawm tus nqi siab dua. Painting muab kev tiv thaiv kev tiv thaiv tab sis yuav tsum muaj kev tu ib txwm thiab tsis tuaj yeem muab kev tiv thaiv kab mob zoo li zinc. Cathodic kev tiv thaiv muaj txiaj ntsig zoo tab sis feem ntau yog siv rau cov qauv loj xws li cov raj xa dej thiab xav tau kev saib xyuas txuas ntxiv. Galvanized steel tawm qhov sib npaug ntawm tus nqi thiab kev ua tau zoo, muab kev tiv thaiv corrosion zoo rau ntau cov ntawv thov.
Kev nce qib hauv cov tshuab galvanization
Cov kev txhim kho tsis ntev los no hauv Galvanization Technology Aim los txhim kho cov corrosion tsis kam ntawm cov hlau galvanized. Cov tswv yim xws li Galvannealing, uas muaj feem cuam tshuam tom qab kev kho cua sov Tsis tas li ntawd, kev txhim kho ntawm tshwj xeeb zinc-txhuas-magnesium txheej tau pom muaj kev ua haujlwm zoo dua nyob hauv ib puag ncig. Ib txoj kev tshawb fawb los ntawm Ntiaj Teb Zincational ua qauv qhia tau tias cov kev pleev xim zoo tshaj plaws tuaj yeem muab rau peb zaug ntawm cov khoom siv corrosion.
Cov Qauv thiab Cov Lus Qhia Tshwj Xeeb Saib Xyuas Galvanized Steel
Ob peb tus qauv thoob ntiaj teb qhia kom muaj rau cov hlau galvanized, ua kom pom tseeb thiab muaj kev cia siab hauv nws daim ntawv thov. Cov Qauv Tseem Ceeb suav nrog:
ASTM ATM Aİ123 / A123M : Npog cov cai rau zinc (kub-dip galvanized) txheej ntawm cov khoom lag luam hlau thiab hlau.
ISO 1461 : Qhia cov khoom dav dav ntawm cov txheej txheem thiab cov qauv ntsuas rau kub-dip galvanized tsho khuam ntawm cov kab hlau thiab hlau.
EN 1179 : European txheem rau Zinc thiab Zinc Alloys rau Galvanizing.
Ua raws li cov qauv no kom ntseeg tau tias cov hlau galvanized tau ntsib qhov tsim nyog zoo rau corrosion tsis kam, cotic cov zog, thiab cov khoom siv neeg siv neeg.
Cov tswvyim kev xav thiab kev lag luam kev lag luam
Kev lag luam cov kws tshaj lij qhia txog qhov tseem ceeb ntawm kev xaiv cov kev cai ib puag ncig thaum cov hlau qhia galvanized. Dr. Michael Thompson, tus kws ua haujlwm metallurgical tshwj xeeb hauv kev tiv thaiv thiab kev saib xyuas zoo thiab kev saib xyuas zoo thiab ua kom tiav nws lifespan. '
Cov neeg tsim khoom txhais tau cov kws ua lag luam kom tau kev kawm txog cov kev txwv thiab kev siv cov hlau galvanized. Sarah Johnson, Tus Thawj Coj Cov Khoom Tsim Kho Cov Chaw Tsim Tshuaj Ntaus Hlau, peb tuaj yeem paub meej txog cov khoom lag luam thiab cov neeg tsim qauv. Los ntawm kev ntseeg tau ntawm cov qauv steel. '
Kev Kawm Kev Kawm: Galvanized steel hauv infrastructure tej yaam num
Kev siv cov hlau galvanized hauv cov phiaj xwm loj loj hauv cov phiaj xwm loj tshwm sim ua rau pom tau zoo thiab cov nyom. Sydney harbor choj, piv txwv li, koom nrog kev sib koom tes ntawm cov kauj ruam ntawm cov 1932. Conversely, kev ua kom huv huv ntawm cov hlau galvanized hauv qee qhov kev xaiv San Mateo-Hayward nyob rau hauv California uas tsim nyog xaiv cov khoom lag luam marine.
Cov lus qhia tswv yim rau kev siv galvanized steel
Kev txiav txim siab tsim
Kev tsim qauv nrog kev tiv thaiv corrosion suav nrog kev tso dej kom tiv thaiv kom tiv thaiv kom tiv thaiv cov dej sib txuas, thiab cov cremicization uas muaj cov neeg sawv daws ua kom haum. Kev siv cov seev cev thiab tsim qauv sib koom ua ke tuaj yeem tiv thaiv cov hlau galvanized ntxiv.
Cia thiab tuav
Kev khaws cia zoo thiab tuav ntawm cov khoom lag luam steel galvanized yog qhov tseem ceeb kom tiv thaiv corrosion ua ntej. Cov ntaub ntawv yuav tsum tau muab cia rau hauv cov chaw qhuav, muaj cov cua muaj cua kom deb ntawm cov tshuaj corrosive. Thaum lub sij hawm thauj mus los thiab kev teeb tsa, kev saib xyuas yuav tsum raug coj mus kom tsis txhob ua kom lub zinc txheej zinc.
Qhov cuam tshuam ntawm cov cai tswj hwm ntawm galvanized steel siv
Kev cai tswjfwm kev cai thiab ib puag ncig cov kev cai cuam tshuam rau kev tsim khoom thiab kev siv ntawm Galvanized steel. Kev txwv ntawm kev siv cov tshuaj muaj kev phom sij, xws li txhuas hauv galvanization, tau coj mus rau kev saws cov txheej txheem ua tshuaj ntxuav. Cov kab lis haujlwm thiab cov qauv kev lag luam feem ntau qhia meej txog kev siv Galvanized steel rau qee cov kev siv, txhawb kev nyab xeeb thiab muaj kev ruaj ntseg. Ua raws li cov kev cai no yog qhov tseem ceeb rau cov tuam ntxhab thiab cov kws tshaj lij tsim khoom.
Yav tom ntej saib xyuas thiab tshawb fawb
Ua ntej tshawb fawb lub hom phiaj los txhawb kev txhim kho corrosion corrosion ntawm galvanized steel. Nanotechnology-based txheej txheem tau raug tshawb pom los tsim Ultrathin tiv thaiv txheej nrog kev kho tus kheej. Ib qho ntxiv, ib puag ncig phooj ywg Galvanization yog nyob rau hauv kev txhim kho los txo cov kev cuam tshuam ecological ntawm kev tsim khoom. Kev sib koom ua ke ntawm Smart corrosion Saib Xyuas Kev Siv cov qauv txheej txheem cov qauv muaj peev xwm muab cov ntaub ntawv tseem ceeb, ua kom cov tswv yim txij nkawm.
Kev kawm ntawv thiab kev qhia rau cov kws tshaj lij kev lag luam
Txhim kho cov kev paub ntawm cov neeg tsim qauv ntawm cov kws kes miv, engineers, thiab cov neeg ua haujlwm tsim kho txog steelized yog qhov tseem ceeb rau nws siv tau zoo. Cov Kev Pabcuam thiab cov hoob pov thawj uas muaj los ntawm kev siv cov tuam txhab kev lag luam, AISC), muab cov ntaub ntawv tseem ceeb ntawm cov khoom siv, kev txiav txim siab tsim qauv, thiab kev coj ua zoo. Kev kawm txuas ntxiv pab cov kws tshaj lij kev pab cuam tshuam txog kev nce qib thev naus laus zis thiab kev hloov zuj zus.
Tag
Hauv cov ntsiab lus, thaum Galvanized steel yog tsim los tiv thaiv xeb, nws tsis yog kev tiv thaiv kev xeb hauv qab qee yam. Cov xwm txheej ib puag ncig, kev puas tsuaj rau kev puas tsuaj, thiab tshuaj lom neeg tuaj yeem sib haum xeeb cov txheej tivthaiv, ua rau xeb ntawm cov hlau hauv qab. Los ntawm kev nkag siab cov yam ntxwv zoo tshaj plaws hauv cov khoom xaiv, tsim qauv, thiab txij nkawm, lub durability ntawm cov steel hlau tuaj yeem txhim kho. Cov kev nce qib hauv cov tshuab galvanization thiab qhov tseem ceeb ntawm kev kho kom ruaj khov ntxiv txuas ntxiv cov hlau lub luag haujlwm ntawm cov tshuab galvanized hauv cov tshuab ua haujlwm niaj hnub. Rau kev lag luam thiab cov tub txawg cia siab rau Galvanized steel , kev nkag siab zoo ntawm nws cov khoom thiab cov kev txwv yog qhov tseem ceeb rau kev ua tau zoo thiab ntev.
